Fountain-pen.



PATENTBD JAN. 17, 1905.

A. EBERSTEIN. FOUNTAIN PEN. APPLIOATION 211.111) 4211.14. 1904.

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No. 780,416. PATENTED JAN. 17, 1905.

A. EBBRSTEIN.

FOUNTAIN PEN.

APPLIOATION FILED APn.14, 1904.

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No. r(80,416.

i UNITED STATES Patented January 17, 1905.

AUGUST EBERSTEIN, OF .VVINTHROP7 MASSACHUSETTS, yASSIGNOR TO CHARLESBRANDT, OF BOSTON, MASSACHUSETTS.

FOUNTAIN-PEN'.

SPECIFICATION forming part of Letters Patent No. 780,416, dated January1 7, 1905. Application led April'l, 1904. Serial No. 203,068.

T all' whom t may concern: Y

Be it known that LAUeUsT EBERs'rEIm-a citizen of the United States,residing at Winthrop, county of Suffolk, and State of Massachusetts,have invented an Improvement in Fountain-Pens, of which the followingdescription, in connection with the accompanying drawings, is aspecification', like figures on the drawings representing like parts.

This invention relates to that class of fountain-pens in which theApen-point is slidably mounted in one end of the barrel and means areprovided for retracting or withdrawing said point within the barrel whenthe pen is not in use and for projectingsaid pen beyond the barrel whenthe pen is to be used, and has for its object to provide'a pen of thistype in which the operating means for giving the pen-point itslongitudinal movement are located at the pen end of the barrel. All thedevices of pens of this class of which I am at present familiar have theoperatingmeans located at the opposite end of the holder from the pen.

The particular Jfeatures wherein my invention resides will be more fullyhereinafter described and then pointed out in the claims.

In the drawings, Figure 1v is a side view of my improved pen, the twopositions of the cap being shown in dotted lines. Fig. 2 is an end viewof the pen. Fig. 3 is an enlarged `longitudinal section of the pen. Fig.4 is a section on the line w w, Fig. 3. Fig. 5 is a section on the liney y, Fig. 4L. Fig. 6 is a longitudinal section showingaslightly-modified form of my invention. Fig. 7 is a section on the'line2 2, Fig. 6; and Fig. 8 is a section on the line a a, Fig. 6. 3designates the barrel of the pen, which contains the usualink-reservoir, and 5 designates the feed-bar having the usualfeed-groove 6 therein, which communicates aty one end with saidreservoir and through which the ink is conducted to the tip of thepen-point 7. The feed-bar 5 is constructed to slide back and forth inthe barrel, so as to project the pen beyond the barrel and into theposition for writing or to withdraw'the pen into the barrel. In mypresent invention this longitudinal Vmovement of the feed-bar and penisaccomplished by means of a rotatable pen-actuating member located at thepen end of the barrel and adapted by its rotation relative to -thebarrel to give the required longitudinal Various ways of connecting therotatablev sleeve and the feed so that the rotation of the former givesthe latter its longitudinal movement may beadopted without departingfrom my inventiom and in the drawings I have illustrated two differentways in which Athis object may be accomplished.

I will first describe the form of my invention shown in Figs. 3, 4, and5. The rotatable sleeve or pen-actuating member is designated by 8, andit is provided with a spiral cam-slot 9, through which a pin 10, carriedby a feed-bar, projects, said pin also preferably projecting into alongitudinal guiding-groove 1l, which may either be formed in the barrel3 or ina separate sleeve 4 within said barrel and rigid therewith forthe purpose of preventing said'feed-bar from turning when the sleeve isrotated. The sleeve 8 is held from longitudinal movement in any suitableway,

preferably by forming agroove 20 therein in phsleeve 8 and the feed-bar.4o may either be formed in the barrel itself or invention shown in Figs.3, 4, and 5 the feedbar 5 is encircled by and has rigid therewithasleeve 12, which has the cylindrical neck portion 18 at its end whichforms, with the main 5 body of the sleeve, the annular shoulder 14.

The interior diameter of the outer end of the sleeve 8 is such as tonicely fit the neck portion 18 of the feed-bar sleeve 12, and thediameter of said rotatable sleeve at its inner IO end is of a size tofit the main body portion of said sleeve 12, said rotatable sleeve 8being formed vwith a shoulder which cooperates with the shoulder 14, asseen in Fig. 4, to make a tight joint. rIhe main body of the sleeve 12I5 is cut away to form one or more longitudinal grooves 17 which extendfrom the shoulder 14 to the inner end of the feed-bar. The length of theslot 9 is such with relation to the length of the neck portion 15 of thefeed- 26 bar sleeve that when the feed-bar and pen has been retracted toits full extent the neck portion 18 of 'said feed-bar is withdrawnentirely from the bore 15 of the rotatable sleeve and the end 18 of thefeed-bar is within and be- ,25 yond the shoulder in said rotatablesleeve.

When the parts are in this position, the bore 15 of the sleeve 8 is indirect communication with the ink-reservoir through the longitudinalslots 17 and the pen can be filled by 3o simply injecting ink in thesleeve 8 and allowing the ink to iiow through the channels 17 into theink-reservoir. As soon as the s leeve is turned to project the penforwardly and into operative position, as shown in Figs. 8

3 5 and 4, the neck portion 18 fills the bore 15 of the rotatable sleeveand the shoulder 14 forms with its cooperating shoulder aperfectly-tight J'Qrntto prevent the ink leaking between the The groove11 in a separate sleeve. I prefer, however, to make it in the vseparatesleeve 4, which will be fixedly secured in the end of the barrel eitherby screw-threading it therein or constru cting it with asufficiently-tight fit so that it will retain its position by friction.To prevent the ink leaking around the rotatable sleeve 8, I prefer toemploy a packing-sleeve 28, of cork or similar material, which in this5o form of my invention is located-between the providing the latter withexterior screwthreads which engage interior screw-threads in the sleeveor pen-actuating member 8. In this form of my invention the sleeve 8ahas at its outer end the bore 15 of reduced I diameter, in which theneck portion 13 of the feed-bar sleeve 12a fits, and the main body ofthe sleeve 12 is provided with screw-threads 31, which engage interiorscrew-threads 82 in the sleeve 8. In this form of the invention blesleeve 8 is mounted directly in the barrel 8. To hold the feed-bar 5from rotary movement, I have illustrated it as provided with thefiat-sided stem 83, which passes through a `correspondugly-shapedaperture in a partition or member 34, rigidly held in the barrel. Thisstem can slide through the aperture in the partition, as the pen-bar hasits longitudinal movement; but it holds the pen-bar from turning whenthe sleeve 8"L is turned. Said partition will be of course provided withsuitable apertures to permit the ink to flow therethrough. As shown inthe other forln of the invention, the sleeve 121L will be cut away topresent longitudinal channels 17, through which the ink can How into thereservoir when the pen is being lilled.

-Considered broadly, the pin-and-slot connection between the feed-barand sleeve shown in Figs. 3 to 5 is one form of screw-tlnead, and thescrew-thread connection in the `sleeve 8u in Figs. 6 to 7 is only oneform of camgroove in said sleeve which engages a projection on thefeed-bar. 'Vhen, therefore, l use the term screw-thread connection. lintend it to cover both the forms of my invention herein illustrated,and similarly the term cam-groove7 in the'rotatablc sleeve is intendedto cover both fforms of the invention.

I will preferably make the barrel 3 midway between its end with thepolygonal collar 24 and with the screw-threaded portions 25 and 26, witheither one of which the cap 27 (shown in dotted lines, Fig. 1') may beengaged. When the pen is in use, the cap will be applied to the rightend of the holder, Fig. 1 and caused to engage the screw-threads 2G, andwhen the pen is closed and not in use said cap will be applied to theleft-hand end and causedv to engage the screw-threads 25. The polygonalportion 24 prevents the pen from rolling when placed on a desk or othersmooth surface.

While I have herein shown the preferred embodiments of my invention, yetI wish it understood that the shape, form, and arrangement of thevarious parts may be varied without in any way departing from myinvention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a fountain-pen, a barrel having an open end, a feed-bar and penmovable longitudinally in said open end, and means coperating with thebarrel at the pen end thereof to give said feed-bar and pen a positivemovement in both directions.

2. In a fountain-pen, a barrel having an open end, a rotatable sleevewithin said open end, a feed-bar and pen within said sleeve, and meansconnecting said sleeve and feed-bar whereby the rotation of the sleevegives the feed-bar a longitudinal movement.

3. In a fountain-pen, a barrel having an 65 the sleeve 4 is dispensedwith and the rotatal open end, a sleeve rotatably mounted in said openend, means to hold the sleeve against lon-l l gitudinal movement, afeed-bar and pen within the sleeve, means to hold said feed-bar fromrotary movement, and means connecting said Sleeve and feed-bar wherebythe rotary movementor' the sleeve gives a longitudinal movement to thefeed-bar.

4. In a fountain-pen, a barrel having an open end, a sleeve having aninterior shoulder and rotatably mounted within said open end of thebarrel, means to hold said sleeve from longitudinal movement,the.diameter of the sleeve being less at its outerend than at its innerend, a feed-bar within the sleeve, said feed-bar having a neck portionto fit the smaller diameter of the sleeve, and a shoulder to engage theinterior shoulder in the sleeve, means to hold the feed-bar from rotarymovement while permitting' it to slide, and means connectingthe sleeveand feed-bar whereby the rotary movement of the former gives the lattera longitudinal movement.

5. In a fountain-pen, a barrel having an Y open end, a pen mounted insaid open end for longitudinal movement, a rotatable pen-actul atingmember located at the pen end of the barrel, and means whereby therotation of saidl pen-actuating member relative to the barrel gives tothe pen its longitudinal movement in both directions. f

6. In a fountain-pen, a barrel having anl open end, a pen mounted insaid open end for longitudinal movement, means to hold said pen fromrotary movement relative to the barrel, a rotatable sleeve at the penend of the 35 barrel, and connections between the sleeve and pen wherebythe rotary movement of the sleeve relative to the barrel gives the pen alongitudinal movement.

7. In a fountain-pen, a barrel having an 40 open end, a pen movablelongitudinally in said open end, and rotary means at the pen end of thebarrel to give said pen a positive movement in both directions.

In testimony whereof I have signed my name 45 to this specification inthe presence of two subscribing witnesses.

AUGUST EBERSTEIN.

Witnesses:

LoUis C. SMITH, MARGARET A. DUNN.

